Difference between revisions of "Squiggles research computer server"
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Revision as of 18:45, 31 August 2023
Contents
Introduction
"Squiggles" is a dedicated research computer server designed for the analysis and storage of MEG, Neurophysiology, and Epilepsy data. This guide elucidates the steps to connect using either the recommended FastX connection or the traditional VNC method.
Access Requirements
RCC Account
- To utilize "Squiggles", an RCC (Research Computer Server) account is mandatory.
- Register for an account on [MCW-Infoscope's Research Computing Center].
- If prompted, choose "others" followed by "squiggles" to indicate the server of interest.
- Adhere to the ensuing steps to kickstart a new session and gain remote access to Squiggles.
Login to Squiggles
Choose User Ports: Each user has a dedicated port number for login. New users should select a sport number (##) that is not taken by other users:
| User | Port |
|---|---|
| Jeff Stout | 5910,5911 |
| Joe Heffernan | 5912 |
| Candida Ustine | 5914 |
| Manoj Raghavan | 5913 |
| Chad Carlson | 5915 |
| Chris Anderson | 5916 |
| Serena Thompson | 5917 |
| Patrick Bauer | 5918 |
| Jeff Binder | 5919 |
| Leo Fernandino | 5920 |
| Lisa Conant | 5921 |
| Aqil Izadysadr | 5922 |
| Nick Guzowski | 5923 |
| Zack Harper | 5924 |
| Bill Gross | 5925 |
| Michelle Kassel | 5926 |
| Greg McQuestion | 5927 |
| Monica Keith | 5928 |
| Priyanka Shah | 5929 |
| Vahab Youssofzadeh | 5931 |
| Songhee Kim | 5935 |
| Cameron J Stewart | 5992 |
SSH Tunneling
- Power Shell Method (for Mac/Linux/Windows): In a bash shell, terminal, or Windows PowerShell, execute the following to set up an SSH tunnel for the VNC Viewer:
ssh -N -L 59##:localhost:59## squiggles.rcc.mcw.edu
- Putty (for Windows):
Download Putty for SSH tunneling, and follow the below images for configuration:
PuTTY is an open-source software for SSH Tunneling (or SSH Port Forwarding).
Create a new Session and Connecting to Squiggles
Before proceeding with either the VNC or FastX methods, ensure you've established an SSH tunnel
VNC Method
- Creating & Accessing a VNC Session:
- VNC sessions are initialized automatically during boot-up.
- If issues arise, manually start a session with:
vncserver :## -geometry 1900x1200, replacing##with your specific port number. - For access, employ the [RealVNC viewer].
- In the server address bar, input
localhost:##, where##matches the last two digits of your port.
FastX Method
FastX is potentially a more seamless alternative to VNC, especially when handling many simultaneous users.
- Fetch the FastX client and then:
- Launch FastX.
- Press '+' to set up a new connection.
- Enter Connection Name, host (squiggles.rcc.mcw.edu), and your RCC username.
- To begin a session, tap '+' and use the command
/etc/X11/xinit/xinitrc.
Troubleshooting
- VNC Black Screen: Experiencing a black screen after VNC login? Ensure you've deactivated Anaconda Python prior. Command:
conda deactivate. - Persistent VNC Issues: Switch to the FastX method.
- Killing a VNC session: In terminal,
vncserver -kill :xx/. For manual termination:
rm -f /tmp/.Xxx-lock rm -f /tmp/.X11-unix/Xxx
- Identifying Active Users: Command
ls -l /tmp/.X11-unix.
